ReSharper color definitions for VS2012

Not ready to merge this yet, just opening a pull request for comments/review.

Most importantly, support for [ReSharper's advanced syntax highlighting](http://www.jetbrains.com/resharper/webhelp/Coding_Assistance__Syntax_Highlighting.html) (aka "colored identifiers") is still missing.

The items commented out are still set to "Default". Some of them I haven't gotten around to changing yet, and some of them I don't even know the usages of.

Assistance filling in the blanks would be greatly appreciated.